Rotary steam-engine.



' 0. FRANCO.

ROTARY STEAM ENGINE. APPLICATION FILED JULY 5, 1911.

a fi m m Patented Dec.- 2, 1913.

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G. FRANCO. ROTARY STEAM ENGINE.

APPLIOAITION FILED JULY 5, 1911; 4 1 Q8(), 1 Q5 Patented Dec. '2, 19 13.

4 SHEETS-$33111 2 o. FRANGO.- a ROTARYSTEAM ENGINE. APPLICATION FIL BQJD LYQ 1911. 1,080, 1 ()5, Patented Dec, 2, 1913.

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ROTARY STEAM ENGINE. I APPLICATION FILED JULY 5, 19111 0 1,080,105.Patented Dec. 2, 1913 4 SHEETS-SHEET 4.

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5.. g iam m UNITED STATES CESARE rnnlvco, on NEW YORK, N. Y.

ROTARY STEAM-ENGINE:

Specification of Letters Patent.

Application filed July 5,

PatentedDec.2,1913. 1911'. Serial No. 637,043.

To all whom it may concern:

. Be it known that I, CEsARn FRANCO, a subject of the King of Italy,residing. at New York, in the county of New Yorkand State of New York,have invented new and useful Improvements in Rotary Steam-Engines,'ofwhich the followingis a specification. This invention relatestoimprovements in effecting in a simple, expeditious and easy manner, thereversing of the engine.

Other objects will appear and be better understood from that embodimentof my invention of which the following is a specification, referencebeing had to the accompanying drawings forming a part which:

2 1s a side elevation. Fig. 3 is a horizontal secti e The engineconsists of a cylinder B, the

P in the block M, and their outer end portions extend through openingsin the part' G1 Helical compression springs S, bearing on the oppositeends of yokes e,

operate to project t e outer ends of the pie tons into contactswith thewall of the" (W inder, as shown in Fig. 3.

The valve chest 'v has on one side a flange 6 which is bolted to thecylinderB, and on its opposite side has a flange-13c which is bolted tothe main steam pipe. The passages Z and n in the valve chest communicaterespectively, with the exhaust passage f and steanr'passage g and thesein turn communicate with the interior of the cylinder through the ports7:. and z', respectively. The valve T slides in the valve chest 4) andoperates to "control the admission of steam from the steam inlet 0 tothe steam passage 9 and to 'efi'ect communication-between-the exhaustpassage land the outlet m which communicates with the exhaust pipe '01.Thus when the arts are arranged as shown in Fig. 3 and t e valve-T movedupwardlyso asto clear the passage 11., the

- steam will pass from the inlet 0 through the 5 passages .n and g andinto the cylinder.-

through the port z. Here it will act on the rotary engines and itsobject is to admit of hereof in Figure 1 is a plan view of the engine?piston Z until the latter turns beyond the port it, whereupon the steamwill pass outwardly through the passages f and Z and when the valve israised so as to place the chamber therein in communication with thepassage Z, the steam moving into this chamber will seek outlet throughthe outlet m and exhaust pipe d. v V

The movementof the valve is controlled by the eccentric L at one side ofthe engine, andv through a drive rod O movement is tuated which rocksthe leverqto reciprocate the valve rod 5 and shift the valve so as topermit the entrance of the steam or its exhaust.

' The fulcrum of the lever g is located at the end of an arm 6 which maybe raised or lowered by means or the lever u and locked in a segment atthe outer end' of the'lever u rection of the arrow R.

"As illustrated in Fig. 3, the position of the valve is neutral, butwhen steam is admitted through the passage n, the shaft is otated in thedirection of arrow B, the exhaust taking place through the ports f andZ, but when the lever u is thrown into the position indicated in Fig. 3by A, steam is admitted through the ports f and Z to drive the eccentricto the left, the steam exhausting through the port 2'. It will thus beseen that by changing the position of the fulbe driven in one directionor the other.

The engine is mounted on substantial standar ds"D and e, while the shaftQ is journaled in the bearings U to provide a substantial and operativedevice easily reversed and operated by means of steam or explosivevapor, as desired. It is obvious that the parts may be otheringfifromthe essential features above described. 4 What is claimed as new is: 1.Ina rotary steam engine embodying a eecentrically mounted upon asuitable shaft, said shaft being journaled in suitable bearings providedin the walls of the cylinder, the combination of two oppositely disposed1n .th e rotor and adapted for engaging the given tothe crank arm T onthe shaft Q, I and-by means of the arm a link R is acso that themovement may be in the direction of the arrow A or reversed in the di-'crum through the lever u, the engine may wise arranged or controlledwithout departsuitable cylinder, a steam chest, a rotor springcontrolled pistons reciprocally held peripheral wall of the cylinder androtating the rotor and shaft of the engine with an 'eccentricallycontrolled valve disposed in a suitable valve seat in the steam chest,adapted for alternately opening and closing the induction port and theexhaust port of the engine whereby the steam is controlled as required.to operate the engine, said valve being reciprocally seated inthe'valve. chest and having a rod projected beyond the casing thereof,said rod being pivot-ally secured to a lever adapted for reciprocatingsaid valve, said lever having one end pivotally secured by linkconnection With a crank shaft, said crank shaft being reciprocallyconnected with a rod which is eccentrically connected with the maindriving shaft of the engine, the other end of said lever being connectedby link connection with the arm of an adjusting lever, whereby thefulcrum of the said lever may be shifted as required to change theposition of the valve whereby the engine may be reversed.

2. In a rotary engine having suitable supporting frame, casing,cylinder, steam chest,

rotor and spring actuated reciprocating pistons reciprocally held insaid rotor, said rotor being mounted upon a suitable drive shafteccentrically held in suitable journals provided in the casing of theengine, the combination of a reciprocating valve disposed within thesteam chest, adapted for regulating the flow of steam in the engine withmeans for controlling the valve comprising eccentrically actuatedmechanism connected with the drive shaft of the engine and the valve rodof said valve, said mechanism embodying a lever pivotally connected atits central portion to the valve rod and Copies of this patent may beobtained for having one end connected by a link with crank arm actuatedby the eccentric'mechsf anism of the drive shaft, said lever having itsopposite end .pivotally connected by a link with a crank arm of a handleverad justably mounted upon the frame of the en 4 5' cally actuatedarm supported upon the drive 1 shaft of the engine, said arm beingpivotally connected with a crank arm suitably mounted upon a rockingshaft, said shaft being journaled in suitable bearings provided uponsaid frame, a link connecting the end of the crank arm with one end of alever, said lever; having its central portion pivotally connected with arod provided upon the valve and adapted for actuating the valve, saidlever being fulcrumed at its opposite end by link connections with thearm of an adjustable hand lever, suitably mounted upon the frame of theengine whereby the position of the valve may he changed as required toreverse the engine substantially as shownand described.

New York city May 20th 1911.

CESARE FRANCO.

Witnessesr FRED JOHN ARNEMANN, EMANUEL CAMOIN.

five cents each, by addressing the Commissioner of Patents, Washington,D. C.

